Earth Fault Loop Impedance Test - 3 Lead Low or 2 Lead High - Test Explained In this video Marcus explains what happens when we would set our MFT tester to 3 lead low, 2 lead high and even 2 lead low in order to carryout an earth fault loop impedance on a circuit that has RCD protection. So we can carryout a earth fault loop impedance test it is important to select the correct setting on an MFT tester but do you understand why we often select 3 lead low setting when testing for earth fault loop

🛑 STOP Tripping the RCD - Earth Fault Loop Impedance Test EAL Awards City & Guilds SparkSafe In this video Marcus explains why we set our MFT tester to 3 lead low and not 2 lead high in order to carryout an earth fault loop impedance on a circuit that has RCD protection. So we can carryout a earth fault loop impedance test it is important to select the correct setting on an MFT tester but do you understand why we often select 3 lead low setting when testing for earth fault loop impedance... Vid

External Earth Fault Loop Impedance Ze Test - How to Remove Parallel Earth Paths - Live Testing In this video me and Marcus show how to carryout an external earth fault loop impedance test on a single phase installation. All stage of this live test are demonstrated as well as the importance of removing parallel earth path created by incoming metal pipework such as the water and gas. This video is designed to help learners with testing and fault finding units in City and Guilds and EAL qualificat